Table 4. Biomarkers associated with CHB identified in duck serum.
| No. | Identity | Retention time (min) | Mean measured mass (Da) | Theoretical exact mass (Da) | Mass accuracy (ppm) | Empirical formula ([M + H]+) |
|---|---|---|---|---|---|---|
| 1 | LysoPC (14:0) | 8.06 | 468.3085 | 468.3090 | −1.1 | C22H47NO7P |
| 2 | LysoPC (20:5) | 8.54 | 542.3231 | 542.3247 | −3.0 | C28H49NO7P |
| 3 | LysoPC (20:5) isomer | 8.75 | 542.3220 | 542.3247 | −5.0 | C28H49NO7P |
| 4 | LysoPC (18:3) | 8.93 | 518.3222 | 518.3247 | −4.8 | C26H49NO7P |
| 5 | LysoPC (16:0) | 8.93 | 496.3430 | 496.3403 | 5.4 | C24H51NO7P |
| 6 | LysoPC (17:0) | 9.47 | 510.3570 | 510.3560 | 2.0 | C25H53NO7P |
| 7 | LysoPC (17:0) isomer | 9.67 | 510.3570 | 510.3560 | 2.0 | C25H53NO7P |
| 8 | LysoPC (P-18:0) | 9.81 | 508.3773 | 508.3767 | 1.2 | C26H55NO6P |
| 9 | LysoPC(P-18:1) | 10.23 | 506.3604 | 506.3610 | −1.2 | C26H53NO6P |
| 10 | LysoPE (18:0/0:0) | 10.24 | 482.3252 | 482.3247 | 1.0 | C23H49NO7P |
| 11 | LysoPC (18:0) | 10.39 | 524.3729 | 524.3716 | 2.5 | C26H55NO7P |
CHB, chronic hepatitis B.